Image & signal processing

News and Updates

New Device Design Brings Unparalleled Confidence to Cell Measurements

July 20, 2022

Measuring the numbers and properties of cells moving in a stream — a process called flow cytometry — is critically important to diagnostic medicine

Human figure stands facing large wooden board. Behind that is a row of tubes sticking up from a base.

NIST Method Uses Radio Signals to Image Hidden and Speeding Objects

June 25, 2021

Researchers at the National Institute of Standards and Technology (NIST) and Wavsens LLC have developed a method for using radio signals to create real-time

Escape From Flatland: Calibration Method Enables Microscopes to Make Accurate Measurements in All 3 Dimensions

June 24, 2021

Conventional microscopes provide essential information about samples in two dimensions — the plane of the microscope slide. But flat is not all that. In many

Projects and Programs

Quantitative, Traceable Determination of Cell Viability Using Absorbance Microscopy

Ongoing

The current gold standard for cell viability measurements is the trypan blue assay. Trypan blue dye enters dead cells that have a ruptured membrane. As a result, the dead cells are stained blue. Live cells with an intact membrane, on the other hand, do not absorb the dye molecules and remain

Optical and Optoelectronic Materials Characterization

Ongoing

Today's electronics have reached a point where sheer computation power has combined form and function as the key driver of large consumer markets. The demand for portable and pervasive electronics with greater functionality promises significant changes over the next decades in how society interacts

Indoor Localization and Tracking

Completed

Please see the page that describes NIST work in this area.

AM Machine and Process Control Methods for Additive Manufacturing

Completed

Objective Develop algorithms, methods and standard protocols for Additive Manufacturing (AM) process control, and implement it with software and hardware tools for open control of AM systems to enable more flexible process optimization by manufacturers. What is the Technical Idea? Additively

Publications

Parallel 3D Temperature Image Reconstruction Using Multi-Color Magnetic Particle Imaging (MPI)

October 18, 2024

Author(s)

Klaus Natorf Quelhas, Mark-Alexander Henn, Ricardo Cordeiro de Farias, Weston L. Tew, Solomon I. Woods

Magnetic Particle Imaging (MPI) is a novel technique developed for remotely detecting magnetic nanoparticle (MNP) tracers, with great potential for biomedical

GPU-accelerated parallel image reconstruction strategies for magnetic particle imaging

June 24, 2024

Author(s)

Klaus Natorf Quelhas, Mark-Alexander Henn, Ricardo Farias, Weston L. Tew, Solomon I. Woods

Image reconstruction is a fundamental step in Magnetic Particle Imaging (MPI). Since it was developed, several methods have been studied to perform more

Explainable Classification Techniques for Quantum Dot Device Measurements

March 12, 2024

Author(s)

Daniel Schug, Tyler Kovach, Jared Benson, Mark Eriksson, Justyna Zwolak

In the physical sciences, there is an increased need for robust feature representations of image data: image acquisition, in the generalized sense of two

An Open Source Iris Segmentation Algorithm for Non-ideal Images

March 7, 2024

Author(s)

George W. Quinn

This document describes a new approach to localizing the iris boundaries in non-ideal iris images. The proposed algorithm starts by applying a series of

Software

Custom Lifetime Imaging Platform (CLIP)

CLIP is an analysis program for fluorescence lifetime images. It provides the user with the ability to fit or calculate the phasor plots for lifetime decays

Tools and Instruments

Large Aperture Scanner

The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional